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Bochs/bochs/disasm/disasm.h
Stanislav Shwartsman f8c3968d42 Changes list made after CVS service crash: 
- Fixed critical bug in CPU code added with one of the prev commits
  - Disasm support for SSE4
  - Rename PNI->SSE3 everywhere in the code
  - Correctly decode, disassemble and execute 'XCHG R8, rAX' x86-64 instruction
  - Correctly decode, disassemble and execute multi-byte NOP 0F F1 opcode
  - Fixed ENTER and LEAVE instructions in x86-64 mode
  - Added ability to turn ON instruction trace, only GUI support is missed.
    Instruction trace could be enabled if Bochs was compiled with disasm
  - More changes Bit32u -> bx_phy_address
  - Complete preliminary implementation of SMM in Bochs, SMI is still PANICs but if you press 'continue' everything should work OK
  - Small code cleanup
  - Update CHANGES and user docs
2006-04-05 17:31:35 +00:00

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#ifndef _BX_DISASM_H_
#define _BX_DISASM_H_
#include "config.h"
#define BX_DECODE_MODRM(modrm_byte, mod, opcode, rm) { \
mod = (modrm_byte >> 6) & 0x03; \
opcode = (modrm_byte >> 3) & 0x07; \
rm = modrm_byte & 0x07; \
}
#define BX_DECODE_SIB(sib_byte, scale, index, base) { \
scale = sib_byte >> 6; \
index = (sib_byte >> 3) & 0x07; \
base = sib_byte & 0x07; \
}
// will be used in future
#define IA_286 0x00000001 /* 286+ instruction */
#define IA_386 0x00000002 /* 386+ instruction */
#define IA_486 0x00000004 /* 486+ instruction */
#define IA_PENTIUM 0x00000008 /* Pentium+ instruction */
#define IA_P6 0x00000010 /* P6 new instruction */
#define IA_SYSTEM 0x00000020 /* system instruction (require CPL=0) */
#define IA_LEGACY 0x00000040 /* legacy instruction */
#define IA_X87 0x00000080 /* FPU (X87) instruction */
#define IA_MMX 0x00000100 /* MMX instruction */
#define IA_3DNOW 0x00000200 /* 3DNow! instruction */
#define IA_PREFETCH 0x00000400 /* Prefetch instruction */
#define IA_SSE 0x00000800 /* SSE instruction */
#define IA_SSE2 0x00001000 /* SSE2 instruction */
#define IA_SSE3 0x00002000 /* SSE3 instruction */
#define IA_SSE4 0x00004000 /* SSE4 instruction */
#define IA_X86_64 0x00008000 /* x86-64 instruction */
/* general purpose bit register */
enum {
rAX_REG,
rCX_REG,
rDX_REG,
rBX_REG,
rSP_REG,
rBP_REG,
rSI_REG,
rDI_REG
};
/* segment register */
enum {
ES_REG,
CS_REG,
SS_REG,
DS_REG,
FS_REG,
GS_REG,
INVALID_SEG1,
INVALID_SEG2
};
class disassembler;
struct x86_insn;
typedef void (disassembler::*BxDisasmPtr_t)(const x86_insn *insn);
typedef void (disassembler::*BxDisasmResolveModrmPtr_t)(const x86_insn *insn, unsigned attr);
struct BxDisasmOpcodeInfo_t
{
const char *IntelOpcode;
const char *AttOpcode;
BxDisasmPtr_t Operand1;
BxDisasmPtr_t Operand2;
BxDisasmPtr_t Operand3;
};
struct BxDisasmOpcodeTable_t
{
Bit32u Attr;
const void *OpcodeInfo;
};
// segment override not used
#define NO_SEG_OVERRIDE 0xFF
// datasize attributes
#define X_SIZE 0x0000
#define B_SIZE 0x0100
#define W_SIZE 0x0200
#define D_SIZE 0x0300
#define Q_SIZE 0x0400
#define Z_SIZE 0x0500
#define V_SIZE 0x0600
#define O_SIZE 0x0700
#define T_SIZE 0x0800
#define P_SIZE 0x0900
// branch hint attribute
#define BRANCH_HINT 0x1000
struct x86_insn
{
public:
x86_insn(bx_bool is32, bx_bool is64);
bx_bool is_seg_override() const {
return (seg_override != NO_SEG_OVERRIDE);
}
public:
bx_bool is_32, is_64;
bx_bool as_32, as_64;
bx_bool os_32, os_64;
Bit8u extend8b;
Bit8u rex_r, rex_x, rex_b;
Bit8u seg_override;
unsigned b1, prefixes;
unsigned ilen;
Bit8u modrm, mod, nnn, rm;
Bit8u sib, scale, index, base;
union {
Bit16u displ16;
Bit32u displ32;
} displacement;
};
BX_CPP_INLINE x86_insn::x86_insn(bx_bool is32, bx_bool is64)
{
is_32 = is32;
is_64 = is64;
if (is_64) {
os_64 = 0;
as_64 = 1;
os_32 = 1;
as_32 = 1;
}
else {
os_64 = 0;
as_64 = 0;
os_32 = is_32;
as_32 = is_32;
}
extend8b = 0;
rex_r = rex_b = rex_x = 0;
seg_override = NO_SEG_OVERRIDE;
prefixes = 0;
ilen = 0;
b1 = 0;
modrm = mod = nnn = rm = 0;
sib = scale = index = base = 0;
displacement.displ32 = 0;
}
class disassembler {
public:
disassembler() { set_syntax_intel(); }
unsigned disasm(bx_bool is_32, bx_bool is_64, bx_address base, bx_address ip, const Bit8u *instr, char *disbuf);
unsigned disasm16(bx_address base, bx_address ip, const Bit8u *instr, char *disbuf)
{ return disasm(0, 0, base, ip, instr, disbuf); }
unsigned disasm32(bx_address base, bx_address ip, const Bit8u *instr, char *disbuf)
{ return disasm(1, 0, base, ip, instr, disbuf); }
unsigned disasm64(bx_address base, bx_address ip, const Bit8u *instr, char *disbuf)
{ return disasm(1, 1, base, ip, instr, disbuf); }
x86_insn decode(bx_bool is_32, bx_bool is_64, bx_address base, bx_address ip, const Bit8u *instr, char *disbuf);
x86_insn decode16(bx_address base, bx_address ip, const Bit8u *instr, char *disbuf)
{ return decode(0, 0, base, ip, instr, disbuf); }
x86_insn decode32(bx_address base, bx_address ip, const Bit8u *instr, char *disbuf)
{ return decode(1, 0, base, ip, instr, disbuf); }
x86_insn decode64(bx_address base, bx_address ip, const Bit8u *instr, char *disbuf)
{ return decode(1, 1, base, ip, instr, disbuf); }
void set_syntax_intel();
void set_syntax_att ();
void toggle_syntax_mode();
private:
bx_bool intel_mode;
const char **general_16bit_regname;
const char **general_8bit_regname;
const char **general_32bit_regname;
const char **general_8bit_regname_rex;
const char **general_64bit_regname;
const char **segment_name;
const char **index16;
const char *sreg_mod01or10_rm32[8];
const char *sreg_mod00_base32[8];
const char *sreg_mod01or10_base32[8];
const char *sreg_mod00_rm16[8];
const char *sreg_mod01or10_rm16[8];
private:
bx_address db_eip, db_base;
const Bit8u *instruction; // for fetching of next byte of instruction
char *disbufptr;
BxDisasmResolveModrmPtr_t resolve_modrm;
BX_CPP_INLINE Bit8u fetch_byte() {
db_eip++;
return(*instruction++);
};
BX_CPP_INLINE Bit8u peek_byte() {
return(*instruction);
};
BX_CPP_INLINE Bit16u fetch_word() {
Bit8u b0 = * (Bit8u *) instruction++;
Bit8u b1 = * (Bit8u *) instruction++;
Bit16u ret16 = (b1<<8) | b0;
db_eip += 2;
return(ret16);
};
BX_CPP_INLINE Bit32u fetch_dword() {
Bit8u b0 = * (Bit8u *) instruction++;
Bit8u b1 = * (Bit8u *) instruction++;
Bit8u b2 = * (Bit8u *) instruction++;
Bit8u b3 = * (Bit8u *) instruction++;
Bit32u ret32 = (b3<<24) | (b2<<16) | (b1<<8) | b0;
db_eip += 4;
return(ret32);
};
BX_CPP_INLINE Bit64u fetch_qword() {
Bit64u d0 = fetch_dword();
Bit64u d1 = fetch_dword();
Bit64u ret64 = (d1<<32) | d0;
return(ret64);
};
void dis_putc(char symbol);
void dis_sprintf(char *fmt, ...);
void decode_modrm(x86_insn *insn);
void resolve16_mod0 (const x86_insn *insn, unsigned mode);
void resolve16_mod1or2(const x86_insn *insn, unsigned mode);
void resolve32_mod0 (const x86_insn *insn, unsigned mode);
void resolve32_mod1or2(const x86_insn *insn, unsigned mode);
void resolve32_mod0_rm4 (const x86_insn *insn, unsigned mode);
void resolve32_mod1or2_rm4(const x86_insn *insn, unsigned mode);
void resolve64_mod0 (const x86_insn *insn, unsigned mode);
void resolve64_mod1or2(const x86_insn *insn, unsigned mode);
void resolve64_mod0_rm4 (const x86_insn *insn, unsigned mode);
void resolve64_mod1or2_rm4(const x86_insn *insn, unsigned mode);
void initialize_modrm_segregs();
void print_datasize (unsigned mode);
void print_memory_access16(int datasize,
const char *seg, const char *index, Bit16u disp);
void print_memory_access (int datasize,
const char *seg, const char *base, const char *index, int scale, Bit32u disp);
void print_disassembly_intel(const x86_insn *insn, const BxDisasmOpcodeInfo_t *entry);
void print_disassembly_att (const x86_insn *insn, const BxDisasmOpcodeInfo_t *entry);
public:
/*
* Codes for Addressing Method:
* ---------------------------
* A - Direct address. The instruction has no ModR/M byte; the address
* of the operand is encoded in the instruction; and no base register,
* index register, or scaling factor can be applied.
* C - The reg field of the ModR/M byte selects a control register.
* D - The reg field of the ModR/M byte selects a debug register.
* E - A ModR/M byte follows the opcode and specifies the operand. The
* operand is either a general-purpose register or a memory address.
* If it is a memory address, the address is computed from a segment
* register and any of the following values: a base register, an
* index register, a scaling factor, a displacement.
* F - Flags Register.
* G - The reg field of the ModR/M byte selects a general register.
* I - Immediate data. The operand value is encoded in subsequent bytes of
* the instruction.
* J - The instruction contains a relative offset to be added to the
* instruction pointer register.
* M - The ModR/M byte may refer only to memory.
* N - The R/M field of the ModR/M byte selects a packed-quadword MMX
technology register.
* O - The instruction has no ModR/M byte; the offset of the operand is
* coded as a word or double word (depending on address size attribute)
* in the instruction. No base register, index register, or scaling
* factor can be applied.
* P - The reg field of the ModR/M byte selects a packed quadword MMX
* technology register.
* Q - A ModR/M byte follows the opcode and specifies the operand. The
* operand is either an MMX technology register or a memory address.
* If it is a memory address, the address is computed from a segment
* register and any of the following values: a base register, an
* index register, a scaling factor, and a displacement.
* R - The mod field of the ModR/M byte may refer only to a general register.
* S - The reg field of the ModR/M byte selects a segment register.
* U - The R/M field of the ModR/M byte selects a 128-bit XMM register.
* T - The reg field of the ModR/M byte selects a test register.
* V - The reg field of the ModR/M byte selects a 128-bit XMM register.
* W - A ModR/M byte follows the opcode and specifies the operand. The
* operand is either a 128-bit XMM register or a memory address. If
* it is a memory address, the address is computed from a segment
* register and any of the following values: a base register, an
* index register, a scaling factor, and a displacement.
* X - Memory addressed by the DS:rSI register pair.
* Y - Memory addressed by the ES:rDI register pair.
*/
/*
* Codes for Operand Type:
* ----------------------
* a - Two one-word operands in memory or two double-word operands in
* memory, depending on operand-size attribute (used only by the BOUND
* instruction).
* b - Byte, regardless of operand-size attribute.
* d - Doubleword, regardless of operand-size attribute.
* dq - Double-quadword, regardless of operand-size attribute.
* p - 32-bit or 48-bit pointer, depending on operand-size attribute.
* pd - 128-bit packed double-precision floating-point data.
* pi - Quadword MMX technology register (packed integer)
* ps - 128-bit packed single-precision floating-point data.
* q - Quadword, regardless of operand-size attribute.
* s - 6-byte or 10-byte pseudo-descriptor.
* si - Doubleword integer register (scalar integer)
* ss - Scalar element of a 128-bit packed single-precision floating data.
* sd - Scalar element of a 128-bit packed double-precision floating data.
* v - Word, doubleword or quadword, depending on operand-size attribute.
* w - Word, regardless of operand-size attr.
*/
// far call/jmp
void Apw(const x86_insn *insn);
void Apd(const x86_insn *insn);
// 8-bit general purpose registers
void AL(const x86_insn *insn);
void CL(const x86_insn *insn);
// 16-bit general purpose registers
void AX(const x86_insn *insn);
void DX(const x86_insn *insn);
// 32-bit general purpose registers
void EAX(const x86_insn *insn);
// 64-bit general purpose registers
void RAX(const x86_insn *insn);
// segment registers
void CS(const x86_insn *insn);
void DS(const x86_insn *insn);
void ES(const x86_insn *insn);
void SS(const x86_insn *insn);
void FS(const x86_insn *insn);
void GS(const x86_insn *insn);
// segment registers
void Sw(const x86_insn *insn);
// test registers
void Td(const x86_insn *insn);
// control register
void Cd(const x86_insn *insn);
void Cq(const x86_insn *insn);
// debug register
void Dd(const x86_insn *insn);
void Dq(const x86_insn *insn);
// 8-bit general purpose register
void R8(const x86_insn *insn);
// 16-bit general purpose register
void RX(const x86_insn *insn);
// 32-bit general purpose register
void ERX(const x86_insn *insn);
// 64-bit general purpose register
void RRX(const x86_insn *insn);
// general purpose register or memory operand
void Eb(const x86_insn *insn);
void Ew(const x86_insn *insn);
void Ed(const x86_insn *insn);
void Eq(const x86_insn *insn);
// general purpose register
void Gb(const x86_insn *insn);
void Gw(const x86_insn *insn);
void Gd(const x86_insn *insn);
void Gq(const x86_insn *insn);
// immediate
void I1(const x86_insn *insn);
void Ib(const x86_insn *insn);
void Iw(const x86_insn *insn);
void Id(const x86_insn *insn);
void Iq(const x86_insn *insn);
// two immediates Iw/Ib
void IwIb(const x86_insn *insn);
// sign extended immediate
void sIbw(const x86_insn *insn);
void sIbd(const x86_insn *insn);
void sIbq(const x86_insn *insn);
void sIdq(const x86_insn *insn);
// floating point
void ST0(const x86_insn *insn);
void STi(const x86_insn *insn);
// general purpose register
void Rw(const x86_insn *insn);
void Rd(const x86_insn *insn);
void Rq(const x86_insn *insn);
// mmx register
void Pq(const x86_insn *insn);
// mmx register or memory operand
void Qd(const x86_insn *insn);
void Qq(const x86_insn *insn);
void Vq(const x86_insn *insn);
void Nq(const x86_insn *insn);
// xmm register
void Udq(const x86_insn *insn);
void Vdq(const x86_insn *insn);
void Vss(const x86_insn *insn);
void Vsd(const x86_insn *insn);
void Vps(const x86_insn *insn);
void Vpd(const x86_insn *insn);
// xmm register or memory operand
void Wq(const x86_insn *insn);
void Wdq(const x86_insn *insn);
void Wss(const x86_insn *insn);
void Wsd(const x86_insn *insn);
void Wps(const x86_insn *insn);
void Wpd(const x86_insn *insn);
// direct memory access
void OP_O(const x86_insn *insn, unsigned size);
void Ob(const x86_insn *insn);
void Ow(const x86_insn *insn);
void Od(const x86_insn *insn);
void Oq(const x86_insn *insn);
// memory operand
void OP_M(const x86_insn *insn, unsigned size);
void Ma(const x86_insn *insn);
void Mp(const x86_insn *insn);
void Ms(const x86_insn *insn);
void Mx(const x86_insn *insn);
void Mb(const x86_insn *insn);
void Mw(const x86_insn *insn);
void Md(const x86_insn *insn);
void Mq(const x86_insn *insn);
void Mt(const x86_insn *insn);
void Mdq(const x86_insn *insn);
void Mps(const x86_insn *insn);
void Mpd(const x86_insn *insn);
// string instructions
void OP_X(const x86_insn *insn, unsigned size);
void Xb(const x86_insn *insn);
void Xw(const x86_insn *insn);
void Xd(const x86_insn *insn);
void Xq(const x86_insn *insn);
// string instructions
void OP_Y(const x86_insn *insn, unsigned size);
void Yb(const x86_insn *insn);
void Yw(const x86_insn *insn);
void Yd(const x86_insn *insn);
void Yq(const x86_insn *insn);
// jump offset
void Jb(const x86_insn *insn);
void Jw(const x86_insn *insn);
void Jd(const x86_insn *insn);
};
#endif
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